Tying-up or bundling machine



June 9, 1925.

F. SEDLMAYR TYING UP 011 BUNDLING MACHINE Filed Jan. 17, 1925 Patented June 9, 1925.

, UNITED STATES PATENT OFFICE.

FRITZ SEIDLMAYR, OF MUNICH, GERMANY.

TYING-U? 0R BUNDLING MAoHrnn.

Application filed January 17, 1925.

diameter, for instance, round a tube of tilledv sausage skin, where the stringistied round the joints of a chain of sausages.

According to the invention this is done by passing what I will call the packet through a machine having means for looping thethread round it at intervals and at the same time tying the thread to form a series of knots of the clove-hitch type without any distance or suitably spaced apart. p r V j The machine forthis purpose may comprise a slotted cylinder, with means for passing the packet stepwise theret-hrough, aslotted ring rotatable on the cylinder, carrying a reel of thread, and means for looping the string around the packet and holding the loop open so that the reel can pass through the loop. If the packet is to form a chain of sausages the machine may inelude means for pinching it at intervals, to

Imake constrictions between the sausages,

' and there may be an automatic cutter for cutting the string.

An example of apparatus embodying these features is shown in the accompanying drawing." I

Fig. 1 is an elevation of the apparatus, and I Fig. 2 a plan view thereof.

Fig. 3being a. view from the right hand side of.- Fig. 1. y 1

Figs. 4. and 1 are perspective views, to a larger scale, of parts of the knottying mechanism. V j

Figs. 5 and 5 are sections, to a larger scale, on the line AB of Fig. 1, viewed fro-1n the right and left respectively.

Figs. 6 and 6 are sections, to alarger scale, on the line CD of Fig. 2, viewed from the bottom and top respectively.

Fig. 7 illustrates the knots tied by the mechanism. 7 I 1 resents a multiple clove hitch.

Serial N'o. 3,093.

In the drawing, 1 designates a horizontal hollow cylinder having at the top a slot, and having upon one end thereof a ring 2, likewise provided with a slot or gap. The ring has teeth 3'adapted to mesh with piniohs 4 and 4 for rotating the ring on the cylinder, which is fixed. The ring carries a rotatable reel 5, two eyes 6 and 7, and a small roller 8. Thread or string from the reel passes through the said eyes, and under the roller 8, which is between the eyes. A cam 9 actuates a lever 10 having a curved portion'with a hook 10 at the end, which at intervals-is swung into and out of the ring. The cam 9 is fixed to'a shaft 12,

which also has iiXed wit a cam 13 for actuating a pair of parallel levers 15 connected to a spring 14. The levers 15 have lugs for engaging the thread and forming a loop. At 16, within the slot, there is pivoted to the cylinder 1 a sickle-shaped knife 17. The ends of the .cylinder 1 are faced by the jaws of twotongs 19 and 19?, which I are closed automatically by springs 22, and

are opened by cams 21* and 21 respectively,

on a shaft 20. The tongs haveftheir fulcra on shafts 23 and 28 respectively, on which they are slidable; they are moved towards 'the cylinder by bell crank levers 2 1 and 249, actuated bycams 25 and 25 on the shaft 20, and are re-tracted by springs 26* and 26*. The cams 25 and .25 are axially adjustable on the shaft 20 by means of a spindle 28 and a hand wheel 34, the spindle having a right-hand thread and a left-hand thread whereby it engages screw-threaded sleeves 27 and 27 having forked arms which engage grooved colla'i'sfixed to the cams. By adjusting the cams the stroke of the bell crank levers 24 and 24 can be regulated. Adjacent the circumference of the ring 2 there is resiliently supported segmental member 26, along which the reel 5 travels during part of the revolution of the ring, sothat the reel is rotated by rolling on the member 26, for taking up slack thread.

In Fig. 1, 27 represents a plain clove hitch made upon the packet 30, and 29 re In Fig. 31'and 32 represent two knotted portions of anuncut string 33. In Fig.2, A, A are connected sausages, B being the constriction or nexus between them.

The action of theapparatus is as follows:

The packet 30, to wit the tubular skin. filled with sausage meat, is pushed into the cylinder from the right hand side, as viewed in Figs. 1, 2 or 1, the end of the string being attached to the packetf The cam 21 allows one of the springs 22 to close the tongs 19 and these tongs make a constrictiorf in the packet. The ring 2, rotating as indicated by the arrow in Fig. 4 tends to wind the string roundthe packet, but shortly before the ring completes a revolution, and the gaps in the cylinder and the ring are in register, the curved end of the lever 10 is swung into the ring, so that it lies in the gap of the cylinder, underneath one limb of the ring and in front of the string. The string is engaged by the hook 10 and the lever swinging back, pulls it to the left, transversely, of the ring, across the lugs on the levers 15, which are at this stage ascending (Fig. 1 By continued rotation of the ring fresh thread is drawn through the eye 7 and looped round the packet, so that an open loop Z), 0, (Z, c (Fig. 4:) is formed, through which the reel 5 travels. Immediately after passage of the reel through the .a freshknot to be tied.

loop the levers 15 descend, and the loop is drawn tight, owing to the reel rolling along the member 29 Shortly before the two gaps are in register again the lever 10 swings inwards and catches the thread which is being carried round by the ring. The lugs on the lever 15 drop into the gaps just about when these gaps are fully in reg- -ister, and the loop, which is then already considerably contracted, slips off the lugs. While the lugs are ascending again the hook 10 pulls fresh thread across their path, and so on.

lion of the ring makes a loop around the packet, and two such loops make a clovehitch.

lVhen the knot has been made the tongs 19 are opened and moved to the left by the spring 26 through a distance equal to the length of one sausage, whereupon they re-embrace the packet. The tongs 19 are then in their right hand end position, embracing the packet, and both tongs move to the left, feeding the packet forwards, for The tongs 19 are moved back to the left, and caused to reengage the packet, before the ltongs 19 make their leftward movement.

It will, be understood that it is not essential to cut the string, but the knife 17 pro-- vided in the machine shown by way of example does cut the string. The curved edge of the knife, which can swing on a horizontal pivot, is upwardly directed. \Vhen the packet is pushed into the cylinder 1 the back of the knife rests upon it. The string with which the front end of the packet is tied The pull of the hook 10 assists in tightening theloop which has slipped off the lugs. It will be noted that each revolulies along the packet, and when the levers the ring 2 has made a revolution, and the string is :tliFOPPQd it falls upon the curved edge of the knife, but is not out until, after the second revolution of the ring, the packet is fed forwards and the string is pulled against the inclined knife edge. 7

\Vhat I claim as my invent-ion'and desire to secure .byLetters Patent of the United States is 7 1. In apparatus for the purpose set forth the combination of a hollow cylinder having a longitudinal slot, a'ring1 embracing said cylinder and having a gap, means for rotating said ring a reel holder on said ring, .a loop-ing lever, means for rocking said Tlooping lever, whereby said lever is moved into and out of said gap when said gap is over the cylinder slot,. a lever having a hook,

.and means for vibrating said hooked lever whereby said hook is moved across the path of said looping lever.

2. The combination claimed in claim 1, together with means for feeding a. packet stepwise through the cylinder. 7

3. The combination claimed in claim 1, together with means for imparting intermittent rotation .to a reel carried by the ring. I

4. The combination claimed in claim 1, together with tongs having jaws facing one end of the cylinder, means .for opening and closing said jaws, and means for moving said tongs to and from the cylinder parallel with the axis of the cylinder.

5. The combination claimed in claim 1, together with two tongs, one at each end of said cylinder, means for opening and closing said tongs, and means for said tongs to and from the cylinder, the tongs at one end of the cylinder being closed and held adjacent the cylinder while the tongs at the other end are open and retract-ed from the cylinder.

6. The combination claimed in claim 1, together with tongs having facing one end of the cylinder, means for openingand closing said aws, and means for moving said tongs to and from the cylinder parallel with the axis of the cylinder, the means for moving the tongs comprising a bell crank lever, a shaft, and a cam axially adjust-able on said shaft.

7. The combination claimed in claim 1, together with means for feeding a. packet through the cylinder .and a sickle shaped knife pivoted within said cylinder having its edge directed towards the slot, said knife being positioned to rest with its back on the packet.

S. In apparatus for the purpose set forth the combination of a ring havinga gap, a. reel holder on the outer circumference of said ring, means for supporting a packet and a vibratory member arranged to pull with said ring. means for rotating said ring, the filament across the path of said loop whereby a filament drawn from a reel in forming member, the latter lifting the fila- W the holder and attached to the packet is ment'clear of the path of the reel holder. wound round said packet a vibratory loop In Witness whereof I have signed this forming member moving into and out of said specification.

gap in the course of rotation of the ring, FRITZ SEDLMAYR. 

